Home-page
of amateur radio station

PC4M

Previous callsign:

PA3BSH (17/07/1981 –
06/08/2003)

Welcome
on my site, the main topic is ham-radio and LF radio signals.
Last update 2003-aug-20.

My QTH is HOOGEVEEN, JO32ER

The 136kHz Amateur Radio band can be found in the Low Frequency part of
the radio spectrum as indicated in the diagram below. This is a spectral
measurement from actual LF radio signals. Each signal shows as a vertical line.
The length of each line is a measure of the signal strength.

You can enlarge the picture by
double-clicking on the picture.

Communication in the 136
kHz band is mainly done by Morse code telegraphy (CW or A1A) both by hand or
very slowly (QRS CW). Slow morse code telegraphy can be decoded by computer
using FFT (Fast Fourier Transform) software like Spectogram (see the link below
for more information).

SOLAR ECLIPSE august 11th. 1999

Information
about the effect of the solar eclipse on the propagation of Low frequency